While the fully electric VW Microbus remains little more than a concept vehicle, Volkswagen has pulled back the curtain on a new green vehicle that will actually make it to production: the plug-in diesel car, the XL1.

Unveiled at the Qatar Motor Show, the XL1 is latest entry in Volkswagen's "one-liter car" program, and will be the first to be fully produced. It's a two-seater car with an incredibly light carbon fiber body that weighs in at just 1,753 lbs. The only VW with more carbon fiber in its body is the Bugatti supercar. And when the lightweight is combined with the diesel-electric powertrain, you have a car that will be able to get around 261 miles per gallon.

The electric-only range, meanwhile, will be around 22 miles, and the XL1 can be charged from any household plug.

The XL1 will debut in 2013, first in Germany, then followed by the rest of Europe, with the United States and China to follow after that. No price point has been set.